Continuity mistake: The view out the back of the barn door when it's first revealed does not match the same view, just minutes later, in the final shot of the film. (01:55:43 - 01:59:12)
Continuity mistake: The train that transports The Haynes Sisters and Wallace and Davis from Florida to Vermont is shown as being of the Atchison, Topeka and Santa Fe Railway in one sequence, and of the Southern Pacific Railroad in another. Neither railway ran on the east coast of the U.S.
Continuity mistake: When they are at the table in the train's dining car, there is a large menu against the window. The menu is horizontal. When they start singing, the menu is suddenly vertical.
Continuity mistake: When the General comes into the room for his surprise party the old lady and the granddaughter step back when he first enters then the camera cuts to another angle and they step back again.
Continuity mistake: The two sisters are in their room backstage. One sister is holding a coffee pot and pours a cup of coffee, and then puts the coffee pot down. The camera cuts away and cuts back and now she is holding the coffee pot again.
Continuity mistake: Near the beginning during the war when the two actors are in the tent, they are sitting on a cot talking. They are next to each other, then not, then back, in the same scene.
Factual error: While travelling up the east coast from FL to ME they show a Santa Fe passenger train, which only runs out west.
Continuity mistake: There's a mysterious moving pitcher of buttermilk and a tray of sandwiches in one of Bing's scenes in the Inn.
Continuity mistake: When Wallace and Davis are on the train heading for the club car, they bump the door to the stateroom where the Haynes' sisters are. In the morning when they are getting ready to disembark, the sisters are in sleeping berths, not the stateroom.
Continuity mistake: On the train scene in the dining car, watch the table. Every camera angle change, the salt and pepper shaker, the ashtray, the flower, everything, jumps around on the table.
Continuity mistake: During the General's anniversary/reunion scene, the camera follows him into the room, the candles on the cake are lit. Angle changes to the left, as he continues to walk, the candles are out. Back to behind, the candles are lit again.
Character mistake: When Wallace and Davis start performing together, they show the newspaper "Variety" with five different headlines. Three of those papers have the same story, "Old Trooper Dies."
Continuity mistake: During the morning outside following the buttermilk scene in the inn where "Counting My Blessings" was sung, Bob arrives in a jeep to talk to the general. Bob shows him a hand bill for the upcoming show, which has a reddish top trim. He sits down with the hand bill on his leg in order to light a match for the general's cigarette. The hand bill falls to the ground. However, in the next shot, the hand bill is in Bob's right outside coat pocket with other papers (he may have done that after the previous shot to keep it from falling to the ground but it wasn't caught). (01:08:00)
Continuity mistake: At the dinner, the General blows out the candles on the cake. At the end of the movie they are lit again.
Continuity mistake: In the scene where Wallace and Davis are changing clothes before going to see the Haines sisters, Danny Kaye steps behind a trunk to change pants. When the scene cuts to him actually taking them off the trunk is taller than it was before the cut (for modesty, I assume). It was thigh high before the cut and almost waist high after.
Continuity mistake: When Bob and Phil are doing the Sisters number the blue fans are held backwards then forwards.